Summary

The current version of ITU-T Rec. H.323 requires two completely independent transports: one for RAS and another for H.225.0 call signalling. For several reasons, one of them is FW/NAT traversal; it would be advantageous to be able to use the same transport for both protocols.

This Recommendation defines the mechanism of encapsulating RAS messages inside H.225.0 messages and the method for discovering the ability of a peer H.323 entity to support features defined in this Recommendation.